Cleaner for steam boilers



Jan. 17, 1928.

A. RICHARDSCN CLEANER FOR STEAM BOILERS Filed April 28. 1926 -Il ..-g u www w U.. 5w@ www wmnwm,

HHH Huub! l; www.- mwamm n IA mmdl# .L pim., w

ill

Patented Jan. 17,1928.'

PATENT oFFicE;

ALFRED RICHARDSONLOF NELSONVLLE, OHIO.

CLEANER FOR STEAM BOILERS.

Application filed April 28,1926. Serial No. 105,282.

This invention relates to cleaners for steam boilers. boilers where water is employed for generat ing steam, that a certainquantity of foreign iiiat'ter is carried in suspension in the water and deposited upon the bottom of the boiler in the form of mud. This accumulation of mud noty only covers the bottoni of the boilers, but also the tubes and other parts so that such parts are insulated and thereby prevents the heat from being conducted through the same. The present practice for removing such mud provides for a draw ofi' through the bottom of the 4boiler from which 'the water is withdrawn, but only a small quanitiy of the mud is removed in this manner. General cleaning takes place about everytwo weeks because of the fact that the boilerniust be cooled ln order that the boilers may be in readiness for operating, the cleaning iiiust be done on Sunday.

lt is an objectv of the present invention to provide a device whereby the mud or foreign matter may be removed daily without interruption of the production of steam.

A further object of the 'invention is the provision of a device having a plurality of flat pipes which are disposed between rows of the usual tubing mounted in a boiler, and through which flat pipes the mud and water are :forced byineans of the usual steam pressure in the boiler.

A further object of the vinvention is the Apirovision of a device having a plijirality of tubes depending from a coinnion discharge pipe, with the tubes having open ends terminating adjacent the bottom of the boiler, with the valve mechanism controlling the opening of each tube, whereby the discharge of water and mud from the boiler is limited at will. c

This invention will be best understood from a consideration of the following detailed description, in view of the accoinpanying drawing forming a part of the specitication; nevertheless it is to beiunderstood t-hat the invention is not coiitined to 'the disclosure, being susceptible of suoli changes and modifications which'shall de line no material departure from vthe salient features `of the invention as expressed inthe appended claims.

lt is a well known fact that in all Figure 1 is a longitudinal vertical section vof a boiler` showing my cleaning` device in Figure 5 is a fragmentary vertical section i showing the valve operating means disclosed in plan in Figure Referring incre particularly to the drawings designates a boiler having a steam space 11 above the water level l2. The boiler, as is usual, has a plurality of horizontally arranged pipes 13 connected with the heads 14 and 15, at the opposite sides of the drum and through which a heating medium is forced toheat the water in the boiler Runninglongitudinally of the boiler and located above the top row of the horizontally disposed pipes 13 is a casing 16 in which is rotatably mounted a. pair of cylindrical valves 17 and 1S. These valves are made in sections and lioined together by interengaging locked together by means of a key 2li passing through perforations in said arnis Q3. The key 24 is provided with a notch QG at each end 26 to engage that portion of the arni which is at the upper edge of one of the openings 26. The key is cut out,y as shown at 27, in order to snugly engage over the top of the casing 16, as the arms QS are drawn towards each other, and the key f 24 :is slipped in place for locking the clampi discharge pipe 39 is connected with the cas-1 ing arlns in rigid engagement with thecasing 1G. `The arms, as shownat 28, contorni to the curjwature of the casing 1G so that the upper end of each pipe 22 yvill snugly'ht said casing and seal the pipes troni the passage ofi'luid at this point) It will be noted that the pipes 22 gradually increase in cross sectional area untilfthey" The valves l? and 1S are simultaneously rotated by means of a gear 3l secured to the valves and located between. a pair of plates which are loose on the valves '17 and 15% and adapted to be revolved thereon. A pawl pivoted at 5l o n `edensions of the plates 32 is maintained in engageinent with gear 31 by a Weighted arni integrally ioinied with the pawl. One end of a link 5l is connected at with the plates 32. other end of the link has a slotted conncc tion with a pin 5G carried by a disc 5T. Thedisc is `manually rotated by ja shaft 5S `andhand wheel 59, the shaft being mounted in bearing (il) on the boiler 10.

A discharge `pipe delas connected to the easing 1G andthe valve 17 1s provided with ports Soin order that the fluid Within the 38V controls the discharge of the Ywater through the pipes 34 and 3th A second ing and is n1 open connnunication with the cylindrical valve 1S through a plurality ol ports 35 whereby Water passingI through said valve may be discharged past valve al) and to pipe 37, and thence to the atmosphere.

The Valve Il() controls discharge otwaler through pipe 39 and Valve i8 and is adapted lobe opened for cleaning the boiler `when the valve 3S is closed. y

A pipe 115 is connected with the bottom 29 ot the boiler 10 at one endend a. valve el@ is adapted to open and close said pipe to the connnon discharge pipe 47. The pipea5 is the pipe by which it is attempted to clean the boiler at the present tiine. The ends of the valves 17` and "18 arc/provided with closures ,50. i l

The operation of iny device is :1s-follows: W'hen it is desired to clean` the boiler of niud and other foreign material,` one of the valves such as 38. is opened, aiul pressureot' the steam in the boiler l() forces the Water` and the niudin the bot-toni of the boiler into the flaring inonth o'l a vertically disposed The stand pipe 2Q. it this tinie, the hand Wheel 59 is rotated whereby the yalies 17 and 18 are rerolif'edand `the consecutive ports 2U,

which are spirally arranged, register successively `with the ports 21 in the easing 1G so that the successivepipes 2Q are opened to the boiler and a constant stream, oi mud and Water is being progressively removed :troni the bottonifl` ot the boiler. This water and -innd pass outuundly `through the pipes il?,

Valve 38 is then closed and` valve Ll() is opened and the hand Wheel` 5S) is again rotated in order to successively place the stand pipes 22 connected with the valve lb, iu roninnulisation with the discharge pipe 3S), so that the lwater may be progres L drawn troni the second section ol the boiler. lt will be appreciated thatlhe"steaiuiroin the boiler causes the water in said boilerto rise in the'stand pipe, whichl has` been opened to the bottoni oi' the boiler through y pipe 3S). rl`he water liows past value al) through pipe 37 and is discharged at 47. Il necessary the opeationmay` be repeated until the engineer is satisfied that all the inudhas been cleaned from :the boiler. It will be noted that the successivecurrents ol` Water passing through the stand pipes 22 come frein the Whole section all along the bottoni of the boiler so thatthe mud and" Water frein this portion of the boiler will be removed through the successiveistarul pipes which supply a constant streani ot the uuid and water to the pipes 36 and pipe ,37 after which the inurl and water aredischarged to the atinospheri-a. .By this constructionit unnecessarylo wait until. the boiler has cooled since sleani pressure in the boiler is required [for cleai'ling the boiler of' uuid and ioreign inatter. By this conslrlu'tiou the boiler may be cleaned daily withoutyauy interference with the usual running o'l the factory. y

By niy improved construction the nind may be removed everyday without inter tering with the operation ol? the boiler so that the niud will not boil up over the tubes and inner wallet the shell and thus be kept in continuous circulation. When the inud is not re1noved,`a new deposit oit nnid is being contiiulously formed on the tubes and shell, thus rel'arding heatpene t ation and causing clogging ot the bottoni et the boiler. The acculnuiatjion ci' mud linally requires expensive repaiijs to the boiler and etten loss ol service so that by lill lll)

employing my device a large saving o'l' labor and materials, particularly in gaskets, is had.

Vhat l claim is l. In a boiler, means for removing mud from the bottoni of the boiler Acomprising a valve casing extending the length oi the boiler, pipes suspended from the valve easing and in open communication With the saine, a pair of rotaryvalves in the casing and provided with spirally arranged and spaced ports, said casing having spaced openings With Which the ports Vin the valves are adapted to be `alined successively, a gear located between the valves and secured thereto, discharge pipes connected with the Valve casing and in open communication therewith, said valves having passages `for placing the said valves in open communication With the discharge pipes Where said pipes are connected to the casing, a pair of plates rotatably mounted on the adjacent ends ot the valves,'a Weighted pawl pivotally mounted on the plates and adapted to engage the gear, and means for rocking the plates for causing rotation. of the valves.

y alcasing extending the length of the boiler, pipes suspended from the casing and in open communication with the same, a pair of rotary valves in the casing and provided with spirallyV arranged and spaced ports, said casing having spaced openings With which the ports in the valves are adapted to be alined, a. gear` located between the valves and secured thereto, discharge pipes connected With the casing and in open co1ninunication therewith, said valves having openings for placing the said valves in open communication with the discharge pipes where said pipes are vconnected to the casing, a pair of plates rotatably mounted on the adjacentends of the casing, a Weighted paivl pivotally mounted on the plates and adapted to engage the gear, and means for rocking the plates for causing rotation of said gear to turn said valves, the pipes depending 'from the casing having their upper ends split torining a pair of flanges embracing the casing, said flanges having alined passages, and keys inserted in the passages for clamping the flanges snugly to the casing.

ALFRED RICHARDSON. 

